Disposable combination file and handle

ABSTRACT

A disposable combination file and handle is formed of sheet metal having a plurality of sharpened file teeth struck outwardly therefrom with the sheet metal bent to form oppositely disposed sides at least one of which carries file teeth thereon. A handle is integrally secured to the file by welding or the like with the handle consisting of a strip of sheet metal having folded in opposite sides adapted for connection to the file. In a modified form of the invention integral pads are formed on the file and the handle engages over the pads and is rigidly secured thereto.

United States Patent Coon DISPOSABLE COMBINATION FILE AND HANDLE FOREIGN PATENTS OR APPLICATIONS United Kingdom 29/78 1 June 10, 1975 Primary Examiner-Leonidas Vlachos Attorney, Agent. or FirmB1air & Brown [57] ABSTRACT A disposable combination file and handle is formed of sheet metal having a plurality of sharpened file teeth struck outwardly therefrom with the sheet metal bent to form oppositely disposed sides at least one of which carries file teeth thereon. A handle is integrally secured to the file by welding or the like with the handle consisting of a strip of sheet metal having folded in opposite sides adapted for connection to the tile. In a modified form of the invention integral pads are formed on the file and the handle engages over the pads and is rigidly secured thereto.

3 Claims, 12 Drawing Figures PATENTEDJUH 10 ms SHEET FIG. 9.

FIG.

1 DISPOSABLE COMBINATION FILE AND HANDLE BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to disposable combination files and handles in which the file is formed of sheet metal having file teeth struck therefrom and with opposite upstanding sides integrally secured to the sheet with at least one of the sides carrying file teeth thereon. A handle is rigidly secured to the file in an arched form and consists of a strip of sheet metal with its opposite side edges reverted for strength.

The primary object of the invention is to provide a combined file and handle which is disposable.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings.

FIG. I is a side elevation of the invention shown partially broken away and in section for convenience of illustration;

FIG. 2 is a top plan view of the handle with the file being shown in broken lines;

FIG. 3 is a bottom plan view of the handle with the file shown in broken lines;

FIG. 4 is an end elevation of the invention;

FIG. 5 is a top plan view of the handle blank;

FIG. 6 is a fragmentary end view of the handle structure shown partially broken away for convenience of illustration;

FIG. 7 is a fragmentary longitudinal sectional view of a modified form of the invention;

FIG. 8 is a fragmentary bottom plan view of the file blank used in the structure of FIG. 7;

FIG. 9 is a plan view of a modified form of blank for a file;

FIG. 10 is a side elevation of the file made from the blank of FIG. 9 with parts broken away and in section for convenience of illustration;

FIG. 11 is an end elevation of the structure illustrated in FIG. 10; and

FIG. I2 is a top plan view of the structure illustrated in FIG. I0.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures the reference numeral indicates generally a disposable combined file and handle constructed in accordance with the invention.

The file 20 includes a generally rectangular sheet metal plate 2] having a pair of upstanding side walls 22, 23 integrally formed along the opposite side edges thereof. File teeth 24 are struck from the middle of the generally rectangular sheet 21 and from one of the side walls 23 to project downwardly and outwardly therefrom respectively as can be clearly seen in FIGS. 1 and 4. The file teeth 24 are sharpened and permit the rapid cutting of wood, plastic, and other soft materials as required.

A handle 25 is formed from an elongate strip of sheet metal 26 having its opposite side edges rolled inwardly at 27, 28 for strength. The handle 25 has inwardly extending end members 29, 30 which are spot welded at 31, 32 respectively to the body of the file 20.

The sides 22, 23 assist in rigidifying the generally rectangular plate 21 and the handle 25 may be used to manipulate the file 20 as required. As the teeth 24 be' come dull the file 20 is discarded since its structure is quite inexpensive and the file and handle as a unit are disposable.

In FIGS. 7 and 8 a modified form of the invention is illustrated wherein a file 20' includes a generally rectangular sheet 21' having opposite side walls one of which is shown at 23. The generally rectangular plate 2] has a plurality of struck out sharpened teeth 24' as does the side wall 23'. A handle tab 29 is integrally formed on each end of the generally rectangular plate 21 and is bent along the line 30' to extend perpendicularly upwardly from the plate 2] A handle 25' having inwardly rolled edges 27' is inserted over the handle tabs 29' and is crimped thereto to thus lock the handle 25 to the generally rectangular plate 21 The modified form of the file illustrated in FIGS. 7 and 8 is used in the identical manner to the file illustrated in the preferred form of the invention and may be similarly discarded when the sharpened teeth become dull. In FIGS. 9 through 12 a further modified disposable combination file and handle is illustrated generally at 40. The combined file and handle 40 includes a generally rectangular plate 41 having the opposite side edge portions thereof 42, 43 bent upwardly to lie at right angles to the generally rectangular plate M. The plate 41 and the edge 43 have sharpened file teeth 44 struck therefrom as can be seen in FIGS. 10, 11 and 12.

An elongate handle forming tail piece 45 is integrally formed with one end of the plate 41 and extends outwardly therefrom. Side edges 46, 47 on the tail piece 45 are rolled inwardly to stiffen the tail piece 45 in forming it into a handle. A tab 48 on the outer end of the tail piece 45 is bent to engage the opposite end of the generally rectangular plate 4] and is spot welded thereto. The tail piece 45 is bent along the line 49 to overlie the plate 41. The disposable combined file and handle is used in the identical manner as the disposable file and handle 20 and is discarded when the sharpened teeth 44 become dull.

Having thus described the preferred embodiments of the invention it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the spirit of the claims.

I claim:

I. A disposable combined file and handle comprising a generally rectangular plate, a pair of upstanding side walls integrally secured to the opposite side edges of said plate and extending perpendicularly from said plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip of metal having the opposite side edges thereof rolled under to provide stiffness of said handle, and a pair of tabs integrally formed on the opposite ends of said handle and bent to engage the upper surface of said plate and spot welded thereto.

2. A disposable combined file and handle comprising a generally rectangular plate, a pair of upstanding side walls integrally secured to the opposite side edges of said plate and extending perpendicularly from said plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip of metal having the opposite side edges thereof rolled under to provide stiffness of said handle, said handle integrally connected at one end to one end of said plate and a tab integrally formed on the opposite end of said handle engaging the upper surface of said plate spot welded thereto. 

1. A disposable combined file and handle comprising a generally rectangular plate, a pair of upstanding side walls integrally secured to the opposite side edges of said plate and extending perpendicularly from said plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip of metal having the opposite side edges thereof rolled under to provide stiffness of said handle, and a pair of tabs integrally formed on the opposite ends of said handle and bent to engage the upper surface of said plate and spot welded thereto.
 2. A disposable combined file and handle comprising a generally rectangular plate, a pair of upstanding side walls integrally secured to the opposite side edges of said plate and extending perpendicularly from said plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip of metal having the opposite side edges thereof rolled under to provide stiffness of said handle, and a pair of handle tabs projecting integrally upwardly from the opposite ends of said plate with said bow handle having the rolled under opposite side edges adjacent its opposite ends engaged over said tabs and crimped thereto.
 3. A disposable combined file and handle comprising a generally rectangular plate, a pair of upstanding side walls integrally secured to the opposite side edgeS of said plate and extending perpendicularly from said plate, a plurality of sharpened file teeth struck from said plate and one of said walls, a bow handle positioned over said plate and including an elongate strip of metal having the opposite side edges thereof rolled under to provide stiffness of said handle, said handle integrally connected at one end to one end of said plate and a tab integrally formed on the opposite end of said handle engaging the upper surface of said plate spot welded thereto. 